Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 264,885
Foreign currency translation adjustment	(4,333)
Goodwill, ending balance	260,552
Advanced Connectivity Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	51,693
Foreign currency translation adjustment	0
Goodwill, ending balance	51,693
Elastomeric Material Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	142,589
Foreign currency translation adjustment	(1,073)
Goodwill, ending balance	141,516
Power Electronics Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	68,379
Foreign currency translation adjustment	(3,260)
Goodwill, ending balance	65,119
Other
Goodwill [Roll Forward]
Goodwill, beginning balance	2,224
Foreign currency translation adjustment	0
Goodwill, ending balance	$ 2,224